Using ultraviolet light to purify water
2 views
Skip to first unread message
AOTANI, Masayasu
Jan 6, 2008, 3:22:48 AM1/6/08
to ST...@googlegroups.com, AOTANI, Masayasu
2008年のSTSTは1月7日から始まります。
1月14日が授業休止日なので、7日と21日で終わりです。休暇中は金曜5限の『英語勉強会』以外は有りません。
又、全学共通科目化等に伴い、来年度からはちょっと様子が変わると思いますが、国際交流センターの補講として取っている人達には、特に目立った変化は生じません。
さて、今週のtextです。
Using ultraviolet light to purify water
Transcript of radio broadcast:
10 December 2007
(5’10’’)
Viruses, bacteria and other organisms in dirty water sicken hundreds of millions of people every year. Yet there are many different water-treatment technologies available.
Some systems use ultraviolet light to destroy harmful organisms. One product that disinfects water with UV light is called AquaStar, made by Meridian Design. The American company says most UV water-purification systems put into homes have one or more filters. These use carbon or mesh to catch impurities. The filters are added to improve the taste and smell of water.
But the company says a complex system like this is often not needed in situations where the aim is just to make water safe to drink.
The AquaStar device is a one-liter bottle with an ultraviolet lamp inside. The user pushes a button and the light goes on for about a minute and a half. Two small batteries provide power to the light.
Two electrical engineers, Dan Matthews and Kurt Kuhlmann, designed the system. They brought it to market in January of two thousand five. Since then, they say, Meridian Design has sold about two thousand devices a year, at a price of eighty-nine dollars.
Meridian's newest water treatment device is called the mUV ("move"). This micro-UV device floats and is small enough to use in a glass. It works like the AquaStar purifier but has a rechargeable battery.
Dan Matthews says the mUV can be connected to almost any battery for enough of a charge to clean twelve liters of water. He says Meridian Design is currently supporting a project by the Mexican nonprofit organization Niparaja. The group is producing containers that disinfect water with UV lights powered by the sun. The containers hold fifteen liters.
The device is called the UV Bucket, and it won an award last year from the World Bank. Families in parts of Baja California Sur, Mexico, and in Guatemala are using it.
Meridian Design is also working with several partners on a solar-powered version of its AquaStar purifier. This has already been developed and is now being tested. Dan Matthews says the goal is to be able to sell it at a low price.
Meridian Design is also working with a partner to develop a different kind of solar-powered purification system. This one would make a chlorine-based disinfectant out of salt added to water. The goal there is to be able to store large amounts of water and keep it disinfected.
(9’06”)
1月14日が授業休止日なので、7日と21日で終わりです。休暇中は金曜5限の『英語勉強会』以外は有りません。
又、全学共通科目化等に伴い、来年度からはちょっと様子が変わると思いますが、国際交流センターの補講として取っている人達には、特に目立った変化は生じません。
さて、今週のtextです。
Using ultraviolet light to purify water
Transcript of radio broadcast:
10 December 2007
(5’10’’)
Viruses, bacteria and other organisms in dirty water sicken hundreds of millions of people every year. Yet there are many different water-treatment technologies available.
Some systems use ultraviolet light to destroy harmful organisms. One product that disinfects water with UV light is called AquaStar, made by Meridian Design. The American company says most UV water-purification systems put into homes have one or more filters. These use carbon or mesh to catch impurities. The filters are added to improve the taste and smell of water.
But the company says a complex system like this is often not needed in situations where the aim is just to make water safe to drink.
The AquaStar device is a one-liter bottle with an ultraviolet lamp inside. The user pushes a button and the light goes on for about a minute and a half. Two small batteries provide power to the light.
Two electrical engineers, Dan Matthews and Kurt Kuhlmann, designed the system. They brought it to market in January of two thousand five. Since then, they say, Meridian Design has sold about two thousand devices a year, at a price of eighty-nine dollars.
Meridian's newest water treatment device is called the mUV ("move"). This micro-UV device floats and is small enough to use in a glass. It works like the AquaStar purifier but has a rechargeable battery.
Dan Matthews says the mUV can be connected to almost any battery for enough of a charge to clean twelve liters of water. He says Meridian Design is currently supporting a project by the Mexican nonprofit organization Niparaja. The group is producing containers that disinfect water with UV lights powered by the sun. The containers hold fifteen liters.
The device is called the UV Bucket, and it won an award last year from the World Bank. Families in parts of Baja California Sur, Mexico, and in Guatemala are using it.
Meridian Design is also working with several partners on a solar-powered version of its AquaStar purifier. This has already been developed and is now being tested. Dan Matthews says the goal is to be able to sell it at a low price.
Meridian Design is also working with a partner to develop a different kind of solar-powered purification system. This one would make a chlorine-based disinfectant out of salt added to water. The goal there is to be able to store large amounts of water and keep it disinfected.
(9’06”)
**********************************
青谷英語のすべて
「英語勉強力： 成功する超効率学習」
（DHC出版のCDBook）
http://aoitani.net/dhc.html
**********************************
青谷正妥（あおたにまさやす）♂
プロモーションビデオ（衛星放送録画：個人使用のみ）
http://aoitani.net/Go_on_AOTANI.wmv
-----------------------------------------------------------
『下に出ていますが、年20回発行で、一回400字という、非常に
slowなメルマガを始めました。』
幸運の青い谷、京大のゴールデンボーイ： 青谷正妥
http://aoitani.net/
（来ると不幸になるホームページ：但し、虫はいません。）
・英語のカリスマ青谷正妥：TOEFL,TOEIC満点達成
http://aoitani.net/TOEFL_iBT.html
・英語のコンビニ：目からウロコの英語情報（メールマガジンです。）
http://www.mag2.com/m/0000113907.htm
・留学と英語学習のメーリングリスト"EERR"
http://aoitani.net/ の登録ボックスより
・「人は不特定多数に名刺を配り続けると有名になれるのか？」
http://www.japantoday.com/jp/newsmaker/2
-----------------------------------------------------------
Reply all
Reply to author
Forward
0 new messages